Improving an apps looks (interface and graphics)

I know as a programmer I am limited in my ability to create good looking graphics and create a nice looking and harmonious interface, any ideas on how to get help in this area?

I don’t know anyone personally that is really good at art or graphic design, what’s a good way to get help or hire someone to look over my app and provide visual improvements?

Thanks,

Vanz

For starters, maybe you can hire a good illustrator or game artist if you have the budget, but here is a blog I really recommend for creating decent artwork:
http://2dgameartforprogrammers.blogspot.com/